diff --git a/src/company_type.h b/src/company_type.h
new file mode 100644
--- /dev/null
+++ b/src/company_type.h
@@ -0,0 +1,52 @@
+/* $Id$ */
+
+/** @file company_type.h Types related to companies. */
+
+#ifndef COMPANY_TYPE_H
+#define COMPANY_TYPE_H
+
+#include "core/enum_type.hpp"
+
+/**
+ * Enum for all companies/owners.
+ */
+enum Owner {
+	/* All companies below MAX_COMPANIES are playable
+	 * companies, above, they are special, computer controlled 'companies' */
+	OWNER_BEGIN     = 0x00, ///< First owner
+	COMPANY_FIRST   = 0x00, ///< First company, same as owner
+	MAX_COMPANIES   = 0x08, ///< Maximum number of companies
+	OWNER_TOWN      = 0x0F, ///< A town owns the tile, or a town is expanding
+	OWNER_NONE      = 0x10, ///< The tile has no ownership
+	OWNER_WATER     = 0x11, ///< The tile/execution is done by "water"
+	OWNER_END,              ///< Last + 1 owner
+	INVALID_OWNER   = 0xFF, ///< An invalid owner
+	INVALID_COMPANY = 0xFF, ///< An invalid company
+
+	/* 'Fake' companies used for networks */
+	COMPANY_INACTIVE_CLIENT = 253, ///< The client is joining
+	COMPANY_NEW_COMPANY     = 254, ///< The client wants a new company
+	COMPANY_SPECTATOR       = 255, ///< The client is spectating
+};
+DECLARE_POSTFIX_INCREMENT(Owner);
+
+enum {
+	MAX_LENGTH_PRESIDENT_NAME_BYTES  =  31, ///< The maximum length of a president name in bytes including '\0'
+	MAX_LENGTH_PRESIDENT_NAME_PIXELS =  94, ///< The maximum length of a president name in pixels
+	MAX_LENGTH_COMPANY_NAME_BYTES    =  31, ///< The maximum length of a company name in bytes including '\0'
+	MAX_LENGTH_COMPANY_NAME_PIXELS   = 150, ///< The maximum length of a company name in pixels
+};
+
+/** Define basic enum properties */
+template <> struct EnumPropsT<Owner> : MakeEnumPropsT<Owner, byte, OWNER_BEGIN, OWNER_END, INVALID_OWNER> {};
+typedef TinyEnumT<Owner> OwnerByte;
+
+typedef Owner CompanyID;
+typedef OwnerByte CompanyByte;
+
+typedef uint8 CompanyMask;
+
+struct Company;
+typedef uint32 CompanyManagerFace; ///< Company manager face bits, info see in company_manager_face.h
+
+#endif /* COMPANY_TYPE_H */